.top{
  background: #009dff;
  /*background:linear-gradient(to right,#009dff 0,#00c8ff 100%);*/
  position:fixed;
  z-index:1031;
  top:0;
  left:0;
  height:4px;
  transition:all 1s;
  width:0;
  overflow: hidden;
}
.colors{
    width: 100%;
    height: 4px;
}
